Patents by Inventor Keishi SHIBAYAMA

Keishi SHIBAYAMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • SINGULARITY LOCATOR
    Publication number: 20170082676
    Abstract: The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.
    Type: Application
    Filed: December 5, 2016
    Publication date: March 23, 2017
    Applicants: FUJIKURA LTD., ELECTRIC POWER DEVELOPMENT CO., LTD.
    Inventors: Yuji KUMAMOTO, Keishi SHIBAYAMA, Kazuo AMANO
  • SINGULARITY LOCATOR
    Publication number: 20160209458
    Abstract: The present invention provides a singularity locator that enables a singularity such as a fault to be located even in a near-end section. One embodiment of the present invention is a singularity locator (1) that locates a singularity by comparing a transmission wave with a reflected wave of the transmission wave reflected at the singularity at which impedance changes. The transmission wave is a frequency modulated continuous-wave (FMCW) with a continuously modulated frequency, and the singularity is located based on a difference in frequency between the transmission wave and the reflected wave.
    Type: Application
    Filed: September 3, 2014
    Publication date: July 21, 2016
    Applicants: FUJIKURA LTD., ELECTRIC POWER DEVELOPMENT CO., LTD.
    Inventors: Yuji KUMAMOTO, Keishi SHIBAYAMA, Kazuo AMANO